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Review: Oxygen Requirements Across Pathways

publish date: 2026/06/21 20:08:5.164859 UTC

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Sort each process by whether it requires oxygen

drag and drop the selected option to the right place

Correct Answer

(1) Glycolysis,Does not require oxygen
(2) Fermentation,Does not require oxygen
(3) Krebs cycle,Requires oxygen
(4) Electron transport chain,Requires oxygen

Explanation

Glycolysis and fermentation can both occur without oxygen, which is why they are considered anaerobic processes. The Krebs cycle and the electron transport chain, by contrast, are aerobic processes that depend on the availability of oxygen.

Reference

Biology: A self-teaching guide

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